Since the build up of charge inside the event horizon is not observable, I'm not sure what process would result in neutralization of the charge imbalance.
Once Q=M, the inner and outer horizons meet (an interesting concept, thanks)...this implies an unmasking of the black hole since at least...
Thank you stevebd1. Mind a few more questions? How about rotation of the universe?
http://news.discovery.com/space/do-we-live-in-a-spinning-universe-110708.html
http://physics.stackexchange.com/questions/1048/what-if-the-universe-is-rotating-as-a-whole
"We can therefore look at the cosmic...
another black hole question:
if one were to use a cloud on neutral hydrogen gas surrounding a black hole and fire protons directly at the center of the black hole (to avoid changing BH angular momentum) and the associated electrons in the opposite direction. Since, "anything beyond the event...